<div class="div_form">
<div class="admin-left-menu">
    <h2> Administration</h2>
    <a href="index.php?m=administration" <?if($a=='index'):?>class="selected"<?endif?>>User Management</a> 
    <a href="index.php?m=administration&a=view_group" <?if($a=='view_groups'):?>class="selected"<?endif?>>Group Management</a> 
    <a href="index.php?m=administration&a=view_category" <?if($a=='view_category'):?>class="selected"<?endif?>>Category Management</a> 

</div>

</div>